Suspension modeling and optimization using finite element analysis |
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| Affiliation: | 1. Department of Zoology, Nizam College, Hyderabad 500 001, TG, India;2. Department of Biology, Norfolk State University, Norfolk, VA 23504, USA;1. Department of Mechanical Engineering, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA 01609, USA;2. Department of Aerospace and Mechanical Engineering, University of Liege, 1 Chemin des Chevreuils, 4000 Liege, Belgium;3. Department of Aerospace and Mechanical Engineering, Universitá di Roma “La Sapienza”, Via Eudossiana, 18, Rome 00184, Italy;4. Technical Data Analysis, Inc., 3750 Palladian Village Drive, Suite 400, Marietta, GA 30066, USA;1. Department of Cell and Developmental Biology, University College London, London WC1E 6BT, UK;2. Center for Substance Abuse Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA 19140, USA |
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| Abstract: | A finite element based optimization software Altair OptiStruct is used to optimize the design of suspensions in hard disk drives. Topology optimization, topography optimization and combinations of both techniques are used to optimize a contact start-stop suspension with respect to torsion, bending and sway mode frequencies. The suspension, gimbal, slider and airbearing are modeled. The airbearing is modeled with linear springs to represent stiffness in the z-direction, pitch and roll. Modal analysis is compared to experimental resonance data to verify the model. The results show that improvements of more than 50% can be achieved with respect to increasing sway or torsional modes. |
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